Problem when calling the JSP Page from Website. - Websphere

This is a discussion on Problem when calling the JSP Page from Website. - Websphere ; Dear,
Iam getting problem when iam requesting the JSP pages in my webstie(this problem is getting now only but this website iam using since last 5 years with this WS Application server only).
1. error
Servlet Error: : java.lang.NullPointerException
at ...